Compilare: user.cpp: In member function ‘void ZAlgorithm::makeZValues()’: user.cpp:33:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<S.size(); ++i){ ^ user.cpp: In function ‘int main()’: user.cpp:64:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=(int)pattern.size(); i<S.size(); ++i){ ^ user.cpp:65:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (z[i] >= pattern.size()){ ^